package com.neo.springcloud.controller;

import cn.hutool.core.collection.CollectionUtil;
import com.neo.springcloud.entities.CommonResult;
import com.neo.springcloud.entities.Payment;
import com.neo.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.util.List;

@Slf4j
@RestController
public class OrderController {

    // public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;
    
    @Resource
    private LoadBalancer loadBalancer;
    
    @Resource
    private DiscoveryClient discoveryClient;

    @PostMapping("consumer/payment/create")
    public CommonResult<Long> create(@RequestBody Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);

    }

    @GetMapping("consumer/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
    }

    @GetMapping("consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPaymentById2(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        log.info("response :{}", entity);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        }
        return new CommonResult<Payment>(444, "操作失败");
    }


    @GetMapping("consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (CollectionUtil.isEmpty(instances)) {
            return null;
        }
        ServiceInstance instance = loadBalancer.instances(instances);
        return restTemplate.getForObject(instance.getUri() + "/payment/lb", String.class);
    }

    @GetMapping("consumer/payment/zipkin")
    public String paymentZipkin() {
        return restTemplate.getForObject("http://localhost:8001/payment/zipkin", String.class);
    }
}
